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과도 열-구조 해석을 통한 A-60 Class 해치 커버 구조 안정성 평가
김지선(Kim Ji-Sun),황태규(Hwang Tae-Gyu),김정환(Kim Jeong-Hwan) 대한기계학회 2018 대한기계학회 춘추학술대회 Vol.2018 No.12
Hatch cover, which is studied, is a device that closes windows made on upper part of cargo ships and middle decks for loading or unloading. In producing hatch covers, securing fire protecting performance is essential to prevent cargo damage and spread of fire. The purpose of this study is to evaluate the fire protecting performance of the hatch cover. Based on IMO MSC.1/Circ.1319, heat transfer analysis is performed for 68 minutes and the structural analysis is performed with temperature data resulting from the heat transfer analysis. Finally, thermal stress and thermal deformation occurring in the hatch cover were identified and the hatch cover has sufficient fire protection capability.
공력 하중 저감을 위한 고속철도차량 전두부 해치 커버의 최적 설계
곽민호,강형민,윤수환,권태수 한국전산유체공학회 2023 한국전산유체공학회지 Vol.28 No.3
Design optimization of frontal hatch cover of high speed train was preformed for reduction of aerodynamic load. For this, the shape function was used to model the frontal hatch cover. Then, a total of 15 design points were selected using three design variables: the length of the hatch cover, top-view curvature, and side-view curvature. A three-dimensional flow analysis was performed for each design point. Finally, the optimal shape was derived through optimization, and the aerodynamic load of the optimal shape was compared with that of baseline model. As a result, the length of the frontal hatch increased compared to the baseline model and the aerodynamic load was improved by about 20% from 4,890N to 3,920N through the optimized shape.
허동범(Dongbum Huh),류홍렬(Hongryeul Ryu) 한국해양환경·에너지학회 2012 한국해양환경공학회 학술대회논문집 Vol.2012 No.5
In order to design and install the hatch covers on large container carriers, hatch coaming deformation and hatch cover movement by ship motion should be considered. In general, the relative deformation of hatch coaming top plate is considerable because of vertical bending moment, horizontal bending moment and torsional moment acting on the vessel. In this study, global strength analysis is carried out in accordance with the procedure of Germanischer Lloyd to assess hatch coaming deformation and hatch cover movement. As the increasing demand of large container carriers and owners performance requirement, the effective control of the hatch coaming deformation and torsional strength of the vessel is necessary.